{"id":15045,"date":"2026-10-09T09:42:01","date_gmt":"2026-10-09T09:42:01","guid":{"rendered":"https:\/\/anphuthanhvalve.com\/?post_type=product&p=15045"},"modified":"2026-10-09T09:46:06","modified_gmt":"2026-10-09T09:46:06","slug":"btl-butterfly-check-valve-dual-plate-model-h76x","status":"publish","type":"product","link":"https:\/\/anphuthanhvalve.com\/en\/btl-butterfly-check-valve-dual-plate-model-h76x\/","title":{"rendered":"BTL BUTTERFLY CHECK VALVE (DUAL PLATE) – MODEL: H76X"},"content":{"rendered":"

The BTL butterfly check valve, Model H76X<\/strong>, is a device that allows fluid to flow in one direction only and prevents backflow, protecting pumps and other equipment in the system from pressure drops and water hammer. With a slim, lightweight wafer-type design and two discs that operate independently with the assistance of return springs, this valve offers an optimal solution in terms of space and installation cost for projects and buildings.<\/p>\n

Butterfly check valves are commonly used in water supply and drainage, wastewater treatment, HVAC, fire protection, and industrial projects.<\/p>\n

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The BTL butterfly check valve, Model H76X<\/figcaption><\/figure>\n

Technical information on the BTL H76X butterfly check valve<\/h2>\n

The butterfly check valve is a wafer-type check valve with spring-return flip discs. Its construction is fairly simple, consisting of 5 main component groups:<\/p>\n

Detailed construction table<\/h3>\n
\n\n\n\n\n\n\n\n\n\n
No.<\/th>\nComponent<\/th>\nMaterial<\/th>\nFunction<\/th>\n<\/tr>\n<\/thead>\n
1<\/td>\nBody<\/td>\nCast iron<\/td>\nSlim wafer-type shell clamped between two pipeline flanges, with no flange lugs of its own<\/td>\n<\/tr>\n
2<\/td>\nDisc<\/td>\nDI \/ CF8 \/ CF8M<\/td>\nOpens\/closes the flow, swinging about the shaft<\/td>\n<\/tr>\n
3<\/td>\nShaft<\/td>\nStainless steel<\/td>\nCentral pivot shaft supporting the discs<\/td>\n<\/tr>\n
4<\/td>\nSpring<\/td>\nStainless steel<\/td>\nPushes the discs to the closed position when there is no forward flow pressure<\/td>\n<\/tr>\n
5<\/td>\nSealing ring<\/td>\nRubber<\/td>\nSeals between the disc and the body when the valve is closed, preventing reverse leakage<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Dimension table of the BTL butterfly check valve, Model H76X<\/h3>\n

The table below gives detailed dimensions of the H76X butterfly check valve: diameter D; bolt circle D1; opening clearance D2; body length L; radius R; and thickness T:<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
DN<\/th>\nD (mm)<\/th>\nD1 (mm)<\/th>\nD2 (mm)<\/th>\nL (mm)<\/th>\nR (mm)<\/th>\nT (mm)<\/th>\n<\/tr>\n<\/thead>\n
50<\/td>\n107<\/td>\n65<\/td>\n40<\/td>\n43<\/td>\n27<\/td>\n19<\/td>\n<\/tr>\n
65<\/td>\n127<\/td>\n80<\/td>\n60<\/td>\n46<\/td>\n35<\/td>\n19.8<\/td>\n<\/tr>\n
80<\/td>\n142<\/td>\n94<\/td>\n70<\/td>\n64<\/td>\n42<\/td>\n27.7<\/td>\n<\/tr>\n
100<\/td>\n162<\/td>\n117<\/td>\n88<\/td>\n64<\/td>\n50<\/td>\n27.7<\/td>\n<\/tr>\n
125<\/td>\n192<\/td>\n145<\/td>\n115<\/td>\n70<\/td>\n64<\/td>\n30.3<\/td>\n<\/tr>\n
150<\/td>\n218<\/td>\n171<\/td>\n134<\/td>\n76<\/td>\n77<\/td>\n31.6<\/td>\n<\/tr>\n
200<\/td>\n273<\/td>\n224<\/td>\n182<\/td>\n89<\/td>\n102.5<\/td>\n32.9<\/td>\n<\/tr>\n
250<\/td>\n328<\/td>\n265<\/td>\n220<\/td>\n114<\/td>\n125<\/td>\n43.3<\/td>\n<\/tr>\n
300<\/td>\n378<\/td>\n310<\/td>\n260<\/td>\n114<\/td>\n146<\/td>\n45.3<\/td>\n<\/tr>\n
350<\/td>\n437<\/td>\n360<\/td>\n298<\/td>\n127<\/td>\n170<\/td>\n50.5<\/td>\n<\/tr>\n
400<\/td>\n488<\/td>\n410<\/td>\n350<\/td>\n140<\/td>\n195<\/td>\n52.3<\/td>\n<\/tr>\n
450<\/td>\n539<\/td>\n450<\/td>\n385<\/td>\n152<\/td>\n215<\/td>\n58.2<\/td>\n<\/tr>\n
500<\/td>\n594<\/td>\n505<\/td>\n438<\/td>\n152<\/td>\n238<\/td>\n58.3<\/td>\n<\/tr>\n
600<\/td>\n695<\/td>\n624.5<\/td>\n538<\/td>\n178<\/td>\n292<\/td>\n74.6<\/td>\n<\/tr>\n
700<\/td>\n810<\/td>\n720<\/td>\n662<\/td>\n229<\/td>\n345<\/td>\n98<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

 <\/p>\n